mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-18 15:51:11 +00:00
195 lines
9 KiB
C
195 lines
9 KiB
C
/*
|
|
* Copyright (c) 2008 The Khronos Group Inc.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining
|
|
* a copy of this software and associated documentation files (the
|
|
* "Software"), to deal in the Software without restriction, including
|
|
* without limitation the rights to use, copy, modify, merge, publish,
|
|
* distribute, sublicense, and/or sell copies of the Software, and to
|
|
* permit persons to whom the Software is furnished to do so, subject
|
|
* to the following conditions:
|
|
* The above copyright notice and this permission notice shall be included
|
|
* in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
|
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
|
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
|
|
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
|
|
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
|
|
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*
|
|
*/
|
|
|
|
/** OMX_ContentPipe.h - OpenMax IL version 1.1.2
|
|
* The OMX_ContentPipe header file contains the definitions used to define
|
|
* the public interface for content piples. This header file is intended to
|
|
* be used by the component.
|
|
*/
|
|
|
|
#ifndef OMX_CONTENTPIPE_H
|
|
#define OMX_CONTENTPIPE_H
|
|
|
|
#ifndef KD_EACCES
|
|
/* OpenKODE error codes. CPResult values may be zero (indicating success
|
|
or one of the following values) */
|
|
#define KD_EACCES (1)
|
|
#define KD_EADDRINUSE (2)
|
|
#define KD_EAGAIN (5)
|
|
#define KD_EBADF (7)
|
|
#define KD_EBUSY (8)
|
|
#define KD_ECONNREFUSED (9)
|
|
#define KD_ECONNRESET (10)
|
|
#define KD_EDEADLK (11)
|
|
#define KD_EDESTADDRREQ (12)
|
|
#define KD_ERANGE (35)
|
|
#define KD_EEXIST (13)
|
|
#define KD_EFBIG (14)
|
|
#define KD_EHOSTUNREACH (15)
|
|
#define KD_EINVAL (17)
|
|
#define KD_EIO (18)
|
|
#define KD_EISCONN (20)
|
|
#define KD_EISDIR (21)
|
|
#define KD_EMFILE (22)
|
|
#define KD_ENAMETOOLONG (23)
|
|
#define KD_ENOENT (24)
|
|
#define KD_ENOMEM (25)
|
|
#define KD_ENOSPC (26)
|
|
#define KD_ENOSYS (27)
|
|
#define KD_ENOTCONN (28)
|
|
#define KD_EPERM (33)
|
|
#define KD_ETIMEDOUT (36)
|
|
#define KD_EILSEQ (19)
|
|
#endif
|
|
|
|
/** Map types from OMX standard types only here so interface is as generic as possible. */
|
|
typedef OMX_U32 CPresult;
|
|
typedef char * CPstring;
|
|
typedef void * CPhandle;
|
|
typedef OMX_U32 CPuint;
|
|
typedef OMX_S32 CPint;
|
|
typedef char CPbyte;
|
|
typedef OMX_BOOL CPbool;
|
|
|
|
/** enumeration of origin types used in the CP_PIPETYPE's Seek function
|
|
* @ingroup cp
|
|
*/
|
|
typedef enum CP_ORIGINTYPE {
|
|
CP_OriginBegin,
|
|
CP_OriginCur,
|
|
CP_OriginEnd,
|
|
CP_OriginKhronosExtensions = 0x6F000000, /**< Reserved region for introducing Khronos Standard Extensions */
|
|
CP_OriginVendorStartUnused = 0x7F000000, /**< Reserved region for introducing Vendor Extensions */
|
|
CP_OriginMax = 0X7FFFFFFF
|
|
} CP_ORIGINTYPE;
|
|
|
|
/** enumeration of contact access types used in the CP_PIPETYPE's Open function
|
|
* @ingroup cp
|
|
*/
|
|
typedef enum CP_ACCESSTYPE {
|
|
CP_AccessRead,
|
|
CP_AccessWrite,
|
|
CP_AccessReadWrite ,
|
|
CP_AccessKhronosExtensions = 0x6F000000, /**< Reserved region for introducing Khronos Standard Extensions */
|
|
CP_AccessVendorStartUnused = 0x7F000000, /**< Reserved region for introducing Vendor Extensions */
|
|
CP_AccessMax = 0X7FFFFFFF
|
|
} CP_ACCESSTYPE;
|
|
|
|
/** enumeration of results returned by the CP_PIPETYPE's CheckAvailableBytes function
|
|
* @ingroup cp
|
|
*/
|
|
typedef enum CP_CHECKBYTESRESULTTYPE
|
|
{
|
|
CP_CheckBytesOk, /**< There are at least the request number
|
|
of bytes available */
|
|
CP_CheckBytesNotReady, /**< The pipe is still retrieving bytes
|
|
and presently lacks sufficient bytes.
|
|
Client will be called when they are
|
|
sufficient bytes are available. */
|
|
CP_CheckBytesInsufficientBytes , /**< The pipe has retrieved all bytes
|
|
but those available are less than those
|
|
requested */
|
|
CP_CheckBytesAtEndOfStream, /**< The pipe has reached the end of stream
|
|
and no more bytes are available. */
|
|
CP_CheckBytesOutOfBuffers, /**< All read/write buffers are currently in use. */
|
|
CP_CheckBytesKhronosExtensions = 0x6F000000, /**< Reserved region for introducing Khronos Standard Extensions */
|
|
CP_CheckBytesVendorStartUnused = 0x7F000000, /**< Reserved region for introducing Vendor Extensions */
|
|
CP_CheckBytesMax = 0X7FFFFFFF
|
|
} CP_CHECKBYTESRESULTTYPE;
|
|
|
|
/** enumeration of content pipe events sent to the client callback.
|
|
* @ingroup cp
|
|
*/
|
|
typedef enum CP_EVENTTYPE{
|
|
CP_BytesAvailable, /** bytes requested in a CheckAvailableBytes call are now available*/
|
|
CP_Overflow, /** enumeration of content pipe events sent to the client callback*/
|
|
CP_PipeDisconnected , /** enumeration of content pipe events sent to the client callback*/
|
|
CP_EventKhronosExtensions = 0x6F000000, /**< Reserved region for introducing Khronos Standard Extensions */
|
|
CP_EventVendorStartUnused = 0x7F000000, /**< Reserved region for introducing Vendor Extensions */
|
|
CP_EventMax = 0X7FFFFFFF
|
|
} CP_EVENTTYPE;
|
|
|
|
/** content pipe definition
|
|
* @ingroup cp
|
|
*/
|
|
typedef struct CP_PIPETYPE
|
|
{
|
|
/** Open a content stream for reading or writing. */
|
|
CPresult (*Open)( CPhandle* hContent, CPstring szURI, CP_ACCESSTYPE eAccess );
|
|
|
|
/** Close a content stream. */
|
|
CPresult (*Close)( CPhandle hContent );
|
|
|
|
/** Create a content source and open it for writing. */
|
|
CPresult (*Create)( CPhandle *hContent, CPstring szURI );
|
|
|
|
/** Check the that specified number of bytes are available for reading or writing (depending on access type).*/
|
|
CPresult (*CheckAvailableBytes)( CPhandle hContent, CPuint nBytesRequested, CP_CHECKBYTESRESULTTYPE *eResult );
|
|
|
|
/** Seek to certain position in the content relative to the specified origin. */
|
|
CPresult (*SetPosition)( CPhandle hContent, CPint nOffset, CP_ORIGINTYPE eOrigin);
|
|
|
|
/** Retrieve the current position relative to the start of the content. */
|
|
CPresult (*GetPosition)( CPhandle hContent, CPuint *pPosition);
|
|
|
|
/** Retrieve data of the specified size from the content stream (advance content pointer by size of data).
|
|
Note: pipe client provides pointer. This function is appropriate for small high frequency reads. */
|
|
CPresult (*Read)( CPhandle hContent, CPbyte *pData, CPuint nSize);
|
|
|
|
/** Retrieve a buffer allocated by the pipe that contains the requested number of bytes.
|
|
Buffer contains the next block of bytes, as specified by nSize, of the content. nSize also
|
|
returns the size of the block actually read. Content pointer advances the by the returned size.
|
|
Note: pipe provides pointer. This function is appropriate for large reads. The client must call
|
|
ReleaseReadBuffer when done with buffer.
|
|
|
|
In some cases the requested block may not reside in contiguous memory within the
|
|
pipe implementation. For instance if the pipe leverages a circular buffer then the requested
|
|
block may straddle the boundary of the circular buffer. By default a pipe implementation
|
|
performs a copy in this case to provide the block to the pipe client in one contiguous buffer.
|
|
If, however, the client sets bForbidCopy, then the pipe returns only those bytes preceding the memory
|
|
boundary. Here the client may retrieve the data in segments over successive calls. */
|
|
CPresult (*ReadBuffer)( CPhandle hContent, CPbyte **ppBuffer, CPuint *nSize, CPbool bForbidCopy);
|
|
|
|
/** Release a buffer obtained by ReadBuffer back to the pipe. */
|
|
CPresult (*ReleaseReadBuffer)(CPhandle hContent, CPbyte *pBuffer);
|
|
|
|
/** Write data of the specified size to the content (advance content pointer by size of data).
|
|
Note: pipe client provides pointer. This function is appropriate for small high frequency writes. */
|
|
CPresult (*Write)( CPhandle hContent, CPbyte *data, CPuint nSize);
|
|
|
|
/** Retrieve a buffer allocated by the pipe used to write data to the content.
|
|
Client will fill buffer with output data. Note: pipe provides pointer. This function is appropriate
|
|
for large writes. The client must call WriteBuffer when done it has filled the buffer with data.*/
|
|
CPresult (*GetWriteBuffer)( CPhandle hContent, CPbyte **ppBuffer, CPuint nSize);
|
|
|
|
/** Deliver a buffer obtained via GetWriteBuffer to the pipe. Pipe will write the
|
|
the contents of the buffer to content and advance content pointer by the size of the buffer */
|
|
CPresult (*WriteBuffer)( CPhandle hContent, CPbyte *pBuffer, CPuint nFilledSize);
|
|
|
|
/** Register a per-handle client callback with the content pipe. */
|
|
CPresult (*RegisterCallback)( CPhandle hContent, CPresult (*ClientCallback)(CP_EVENTTYPE eEvent, CPuint iParam));
|
|
|
|
} CP_PIPETYPE;
|
|
|
|
#endif
|
|
|